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Once you save a red link there, and create the page, the link will turn blue and will be accessible anytime you visit it. Go to your user or user talk page (both permanently linked at the top of any Wikipedia page); Surround the page title you want to create in doubled brackets, e.g., [[Proposed Title]]; Click the Publish changes button;
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It is a shaded watermark first used in 1848 that incorporates tonal depth and creates a greyscale image. Instead of using a wire covering for the dandy roll, the shaded watermark is created by areas of relief on the roll's own surface. Once dry, the paper may then be rolled again to produce a watermark of even thickness but with varying density.
A watermark stored in a data file refers to a method for ensuring data integrity which combines aspects of data hashing and digital watermarking. Both are useful for tamper detection , though each has its own advantages and disadvantages.
A digital watermark is called imperceptible if the original cover signal and the marked signal are perceptually indistinguishable. A digital watermark is called perceptible if its presence in the marked signal is noticeable (e.g. digital on-screen graphics like a network logo, content bug, codes, opaque images). On videos and images, some are ...